What follows below is a very brief list of links which can be used to review calculus.
Calculus Links
 Mathematics Archives Calculus Resources OnLine
 This is the granddaddy of calculus links, linking to many, many, other pages which can be used both to learn calculus, and to see how others are teaching calculus.

World Web Math: Calculus Index
 A nice, straightforward review of computational calculus. Though many topics are not covered, differential calculus in both one and multiple dimensions is explained concisely and clearly.
 Mathematical Sciences Instructional Pages
 Some instructional pages with very nice Mathematica notebooks for general use. Note: you must have Mathematica in order to use the notebooks!
 The First Year of Calculus
 Some instructional pages with nice Maple worksheets for general use (and a few Mathematica notebooks). Note: you must have Maple in order to use the worksheets!
 The Integrator
 Just like the name says, this page from the makers of Mathematica will integrate symbolically.
 Visual Calculus
 Has many nice animations to illustrate the concepts behind single variable calculus. Some free plugins are needed to view some of the materials; if they are not installed, the browser will go to the download site automatically.
 Samples from Animating Calculus
 Three examples of animations which aid the visualization of basic calculus concepts. (These are examples from a larger book.)
 Calculus graphics  Douglas N. Arnold
 Yet more graphical examples.